Asus Prime B550M-A WIFI II Desktop Motherboard - AMD B550 Chipset - Socket AM4 - Micro ATX - Ryzen 3, Ryzen 5, Ryzen 7, Ryzen 9, Ryzen 5 Pro, Ryzen 7 PRO, Ryzen 9 PRO, Ryzen 3 PRO Processor Supported - 128 GB DDR4 SDRAM Maximum RAM - DIMM, UDIMM - 4 x Memory Slots - Gigabit Ethernet - IEEE 802.11 a/b/g/n/ac/ax - HDMI - 4 x SATA Interfaces
AMD B550 (Ryzen AM4) micro ATX motherboard with dual M.2, PCIe 4.0, Wi-Fi 6, 1 Gb Ethernet, HDMI, DVI-D, D-Sub, SATA 6 Gbps, USB 3.2 Gen 2 Type-A, and Aura Sync RGB lighting support
- AMD AM4 Socket: Ready for Ryzen™ 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors
- Comprehensive Cooling: VRM heatsink, PCH heatsink, hybrid fan headers, and Fan Xpert 2+ utility
- Ultrafast Connectivity: Dual M.2, PCIe 4.0, Wi-Fi 6, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A support
- Aura Sync RGB Lighting: Onboard addressable Gen 2 header and RGB headers for RGB LED strips, easily synced with Aura Sync-capable hardware
Audio |
Audio Channels | 7.1 |
Miscellaneous |
Brand Compatibility | AMD |
Video |
Onboard Video | CPU Dependent Video |
Physical Characteristics |
Form Factor | Micro ATX |
Width | 9.6" |
Depth | 9.6" |
I/O Expansions |
Number of PCI Express x1 Slots | 2 |
Number of Total Expansion Slots | 3 |
Number of PCI Express x16 Slots | 1 |
Total Number of PCI Express Slots | 3 |
Network & Communication |
Bluetooth | Yes |
Gigabit Ethernet | Yes |
Wireless LAN | Yes |
Wireless LAN Standard | IEEE 802.11 a/b/g/n/ac/ax |
I/O Controller |
RAID Levels | 10 |
| 1 |
| 0 |
Controller Type | Serial ATA/600 |
RAID Supported | Yes |
Interfaces/Ports |
HDMI | Yes |
DVI | Yes |
VGA | Yes |
Number of Network (RJ-45) Ports | 1 |
Total Number of USB Ports | 6 |
Number of USB 3.2 Ports | 6 |
Onboard Interfaces |
Number of SATA Interfaces | 4 |
Total Number of Onboard USB Ports | 6 |
Number of Onboard USB 2.0 Ports | 4 |
Onboard S/PDIF Header | Yes |
Number of M.2 Interfaces | 2 |
Number of Onboard USB 3.2 Ports | 2 |
General Information |
Product Type | Desktop Motherboard |
Manufacturer Part Number | PRIME B550M-A WIFI II |
Manufacturer Website Address | http://usa.asus.com |
Manufacturer | ASUS Computer International |
Product Model | B550M-A WIFI II |
Product Name | Prime B550M-A WIFI II Desktop Motherboard |
Product Line | Prime |
Brand Name | Asus |
Processor & Chipset |
Processor Supported | Ryzen 3 |
| Ryzen 9 |
| Ryzen 7 PRO |
| Ryzen 7 |
| Ryzen 9 PRO |
| Ryzen 3 PRO |
| Ryzen 5 |
| Ryzen 5 Pro |
Total Processor Supported | 1 |
Processor Socket | Socket AM4 |
Chipset Manufacturer | AMD |
Chipset Model | B550 |
Memory |
Maximum Memory | 128 GB |
| 128 GB |
Memory Technology | DDR4 SDRAM |
Number of Memory Slots | 4 |
Memory Form Factor | UDIMM |
| DIMM |
Memory Speed Supported | 4266 MHz |
| 4333 MHz |
| 4400 MHz |
| 4466 MHz |
| 4600 MHz |
| 4000 MHz |
| 3866 MHz |
| 3733 MHz |
| 3600 MHz |
| 3333 MHz |
| 4133 MHz |
| 3466 MHz |
| 2133 MHz |
| 4800 MHz |
| 4866 MHz |
| 2400 MHz |
| 2667 MHz |
| 2800 MHz |
| 3000 MHz |
| 3200 MHz |
| 3333 MHz |
| 3466 MHz |
| 3600 MHz |
| 3733 MHz |
| 3866 MHz |
| 4000 MHz |
| 4133 MHz |
| 4266 MHz |
| 4333 MHz |
| 4400 MHz |
| 4466 MHz |
| 4600 MHz |
| 4800 MHz |
| 4866 MHz |
| 2133 MHz |
| 2400 MHz |
| 2667 MHz |
| 2800 MHz |
| 3000 MHz |
| 3200 MHz |